Steam-pump



(No Model.)

. TUPTS.

STEAM PUMP. No. 341,393. Patented May 4, 1886.

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UNITED STATES PATENT OFF CE.

CYRUS TUFTS, OF COLUMBUS, OHIO.

'STEAM-PUMP.

SPECIFICATION forming part of Letters Patent No. 341,393, dated May 4,1886.

I Application filed May 4, L885. Renewed February 17, 1886. Serial No. 192,304. (No model.)

To all whom it may concern.-

Be it known that I, CYRUS TUETs, of Oolumbus, in the county of Franklin and State of Ohio, have invented certain new and useful Improvements in Steam-Pumps; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form a part of this specification.

My invention relates to an improvement in steam-pumps; and it consists in the combination of the airTchamber having a cylinder formed on one side, a spring-actuated piston in the cylinder, a connectingrod, and avalve for controlling the steam-port of the engine, as will be more fully described hereinafter.

The object of my invention is to provide a steam-pump for supplying hotels, factories, breweries, and other such places with water or other fluids, on any floor, and which is so constructed as to do away with cisterns or tanks, and to provide the air-chamber with an attachment whereby the pump is made automatic 111 its action, so far as starting and stopping are concerned.

Figure 1 is a longitudinal vertical section of a pump embodying my invention. Fig. 2 is a vertical section taken through the valve and at right angles to Fig. 1.

E represents the steam-cylinder Q, the piston placed therein; P, the piston-rod, and U the cylinder of the pump, which is used for forclug water, air, gas, or any fluid to any desired height. The steam-chest 0, upon the top of the cylinder E, is preferably made rounding, as shown in Fig. 1, and through the center of it is passed the hollow plug J, which has an opening through its lower side. Hung or journaledupon this plug J is the oscillating valve A, which has a steam-passage made through its center, so as to connect directly with the ports of the steanrcylinder. In the edges of thisvalve A are also made suitable recesses, which alternately connect with the ports of the cylinder, for the purpose of con veying away the exhaust steam. In the steam-chest is placed the plate or casting D, which rests upon the top of the plug J, and which has suitable ports through it, as shown in Fig. 1, for the delivery and escape of the steam. Upon the top of this plate or casting D is placed a slide-valve, B, which is operated by the rod H in the usual manner. This valve controls the passage of steam to the oscillating valve A, as shown in Fig. 1. The steam enters the top of the chest 0 and passes through an opening made near one end of the plug J, and then escapes through the opening in the bottom of the plug through the valve into the cylinder. The exhaust-steam is carried off through the passage X, both from the valve A and the slide-valve B. This slide- Valve B is operated by means of the arm I, which is secured to the piston-rod P, and which red I alternately strikes the collars R, which are secured to the valve-rod H, for the purpose of shifting the valve B in first one direction and then the other.

For the purpose of starting and stopping the pump whenever the pressure of the fluid being pumped reaches a certain regulated pressure, there is formed upon the air-cham! ber N a small cylinder, Y, in which is placed the piston L and spring M. Through the cap which closes the outer end of the cylinder Y is formed a suitable opening, and through this opening passes the rod K, which is conneeted to the piston L at one end and to the sliding valve 0, in the top of the steam-chest O, at the other. The spring M surrounds the endof the rod K, and serves to force the piston L and the sliding valve 0 back into position after they have been moved by means of the pressure in the air-chamber N. The end of the cylinder Y opens directly into the side of the air-chamber N in any desired relation to the discharge T. As long as this discharge T is open, the fluid that is being pumped passes freely through the air-chamber without affecting the piston L, but when the dis charge is closed and the pressure reaches a certain regulated amount in the air-chamber, the pressure then exerts itself against the piston L and forces it outward in this cylinder Y. When this piston Lis moved, the rod K forces the sliding valve 0 over the inlet-port U, and thus shuts off the supply of steam to the cylinder E. As soon as the steam is shut OK, the pump at once ceases to operate, and then the pressure remains stationary in the air-chamber. When the discharge is opened, so as to relieve the pressure, the force of the spring N forces the piston L back into position, and thus causes the sliding valve 0 to uncover the port U. Steam being thus again admitted to the cylinder E, the pump is again started into operation. It will thus be seen that the pump is allowed to operate only when more fluid is necessary to raise the pressure in the air-chain ber, and as soon as this pressure reaches a certain amount the pump is again stopped.

Although the valve of the steam-pump is here shown and described, it forms no part of this application, but will be'made the subjectmatter of another, which will be filed later on. 

